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Number of repeating variable

  • Thread starter foo9008
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Homework Statement



Is the question wrong ?
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Homework Equations




The Attempt at a Solution


I found that the number of dimension = 6 , primary dimensionof velocity is L / T , which is 2 , number of repeating variable = 2 , so , there are 6-2 = 4 pi group , why the question only gt 3 pi group ?
 
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  • #2
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How to do this question?
 
  • #3
haruspex
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y is L / T , which is 2 , number of repeating variable = 2 , so , there are 6-2 = 4 pi group , why the question only gt 3 pi group
Not sure where you get that formula from. As I understand it, you have 6 quantities that, between them, involve 3 dimensions (MLT), so the equation can be written relating 6-3=3 dimensionless expressions.
 

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